/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraRendererProperties.h
bool SetVariable ( const [FNiagaraDataSetCompiledData](API\Plugins\Niagara\FNiagaraDataSetCompiledData) * CompiledData, const [FNiagaraVariableBase](API\Plugins\Niagara\FNiagaraVariableBase) & Variable, int32 VFVarOffset )